# Functional Harmony vs VocalCoach Pocket

The clearest difference is in-app purchases: Functional Harmony at none against VocalCoach Pocket's 1. VocalCoach Pocket's advantage is update cadence (every 5 weeks vs every 6 months). On price, ads, device support and iOS requirement there is nothing between them.

Both are free to download. VocalCoach Pocket sells 1 one-off in-app purchase. Functional Harmony asks for nothing beyond the download.

Functional Harmony ships an update every 6 months, VocalCoach Pocket every 5 weeks. The most recent releases landed on October 12, 2026 and October 10, 2026 respectively.

## The numbers

| Metric | Functional Harmony | VocalCoach Pocket |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[4.9 (24 ratings)](https://appshunter.io/ios/app/functional-harmony/id1564025162/reviews)** | — |
| Number of ratings | **24** | — |
| Positive reviews | 83.3% of reviews | — |
| In-app purchases | **No** | Yes |
| Ads | No | No |
| Update frequency | Every 6 months | **Every 5 weeks** |
| Monetization | Free | — |
| Size | 24 MB | 5 MB |
| Requires iOS | 18.0 | **17.0** |
| Devices | iPhone, iPad | iPhone, iPad |
| Age rating | 4+ | 4+ |
| Developer | [Dylan Shade](https://appshunter.io/developer/1564023750) | [Yu Shiung Jiang](https://appshunter.io/developer/612234939) |

## What reviewers say

### Functional Harmony

[App page](https://appshunter.io/ios/app/functional-harmony/id1564025162)

This music theory app helps users spell chords and scales by entering a root note. It also identifies intervals when two notes are provided. Learn music theory concepts quickly and easily.

**Highlights:** Spell chords, Spell scales, Identify intervals, Enter root note for chords/scales, Enter two notes for interval identification

**Features:** macOS Compatibility, Vision Pro support

**In-app purchases:** none


### VocalCoach Pocket

[App page](https://appshunter.io/ios/app/vocalcoach-pocket/id6780980141)

**Features:** macOS Compatibility, Family Sharing, Vision Pro support

**In-app purchases (1)**

| Purchase | Price | Billing |
| --- | --- | --- |
| 聲音練習 VocalCoach Pocket Pro 解鎖 | $2.99 | one-time |


## Frequently asked questions

### Is Functional Harmony free?

Functional Harmony is free to download, with no in-app purchases.

### Is VocalCoach Pocket free?

VocalCoach Pocket is free to download, with in-app purchases available.

### Do Functional Harmony or VocalCoach Pocket have ads?

Neither Functional Harmony nor VocalCoach Pocket shows ads.

### Which is updated more often, Functional Harmony or VocalCoach Pocket?

Functional Harmony ships an update every 6 months, and VocalCoach Pocket every 5 weeks. Most recently, Functional Harmony was updated on October 12, 2026 and VocalCoach Pocket on October 10, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*